I recently purchased a 2004 MM-24 bandsaw with a 220v single phase 3.5 KW/4.8 HP motor. It has a three prong locking 220V L6-20A plug on the power cord. Is that correct for this size motor? I would have thought this large a motor would require 220V 30A power. If it is the correct size there should be no problem changing to a non-locking straight bladed plug (6-20A) right?